<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <script src="lib/vue.js"></script>
</head>
<body>
<div id="root"></div>
</body>
<script>
  new Vue({
    el : '#root',
    // render(createElement){
    //   return createElement('span',11);
    // }
    render(createElement){
      return createElement({
        data(){
          return {
            num:1
          }
        },
        template:(`
          <button>{{num}}</button>
        `)
      })
    }
  })
</script>
</html>